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, - . . ' . ,. , - , , . m VXImasfe m m : d ~ ' ' : ~ ' ~ w m I-, m PEAK,:
. , , A . ..- 8 , - .... . . . . ,. . . . 1 - -.m i,- * ,:-.,-. : .>I" . ,,, '.. . . . . . . . . . . ~ . . . . . . . . . . 1 . -. - ,. I . % . , :. , , , ,,, . ' * . . . . . . . . . . . . . . . , , : . !, 1: : . . . :: . . . . . . . . , - . . . . . . *.. . . A , - . . . . 4 . , ,- - , .-
,- . .. . . - - . . , . . / . . . . . . . I . . . : . r: * * . , . . ' . , - . r . ;-; ".A;. * , -* < .. I . . ,- . . , , . , . . . . . . . . . . U" . . ,, . ' . , . ,
h r g e O. and &t S,: Waltan,, Jr, . W' .. ' ;!!:"' *., ;; . ,' , + - . .,:..;. * - " %.
, . . . . . . . . . . . 4 Y ' ! . . . . . . . . .' . . . . ., ir I . .' . ,. - - , . , , : , , , , . . .,I.. .
. . . . . t... . . . . , , - . , , . . ? " . ! . , - , > ;: - 3 , , ,-:, ., ; <; ...;.:... ; , ' , . , .-,. ' . ' " .. 1. . , , . . '. --. . * , . ,* . . 1 . , . . - . I I . ' - . - < ' 1' . - . . . . . . . . . . ....-. . :b:. . .+,--. " . . . .... . . . . . . ' r i : . . I , , , .,:,-. . .- '.i.. - 2 : . -mmH-, .; ;.:, - A - , . ' . , I 4 ' - . ' ,. . , ..:. * , . ,, . . . . ... . - .. yr; . . 4 , . , : ,, ;. '. . , . ' ..' ..& . ,, . . . . . . . . . .' . ,- - ,,; , ) :,. , , c ..,, . ,; A - , .>. +*a,.- ., ; ,.,. , ' . ' , ,,' 2 . A,* *',, ,,\, ", . . . . . . . * mi:horb, in mmeetion wlth a GedZogtcal Smvq pmJeCt t o lnvestigata
the occLlffenca of rui.cke5, chromiw:: &[email protected],&$&, s m n e d seperd dtrabmic ~ d ~ k bodies in smthea~tm U&a & r i ~ the mmer of 1943. &mng these uere the W a s , Of ,'the'8la&ik fbb, ' -ICme p&, .&d PIG.*-Wett eppem. t o be . . . p e t i d l y &dlm, . . . . , . . , . .... . . \ * , - ... ! . . . .,.. . , .- , .
' +. : ,-: . . , , ' i .
-faAbws 1. . . . . . . . . . . . .* . . , , . . . . . . . . . # . . . ' . I -
' I # . .
Ihe i slmh su9 in. C h m m Strait. ( see fig. -"l) '; : '&out 8 ndles wuth 09 Q e met mther3ly pint .on vinkedm .Jaaand, :&-&msv*ss.rperratad fr& prime of
. , . . . . . . . . . Vdes IalePldby&a&evmf F a a ~ e ; . : :.,: ., . , . . , .
I , "I , .-:- ,. , , .:, . - 5 . . .. , . , .,r-> ., > E - - , ! ' , ' , , . . "
. ; . a
Ihe islrads were bri&flg. s k d b$, ' I .-u:.Lfi 19a *!&wibd ** ;aril~ mmations of me ultrabasic m&i; - ~ ~ ~ , - spent jfitcit tno d e of J~ne 1943 4- th~-B$m,.f&m&,. - . , . , . . . , . . . . .
, .. . . . . . . . . ., ;.- , . , ,. - , -:,!;, ,. , , - ; , , ~ ; < ;.;,; G ,.. -,;, . . . . * ,
me Blaehke iamd group caaaiats of sixteen i&mb ranging in length from a n ~ ~ @ ~ I . n z i : L . e *0:.:1* mfaeq. mc3;-&? . . ~ B & : - S ; ~ X & * , ; . : - a@ :i'g$mh
- ,
a tide& ~ m & " ' ~ ~ t e e t ~ b ' f ~ ~ ~ ~ t ' s ~ f r ~ . ~ - ' ~ ~ . ~ 1 ~ ~ , ' i ~ & ~ a s j ~ ~ ~ 3 0 ~ ' m d ' .: ,:. haavilp.h&d., -The .hi@& p$nf , f b . 414: feet..m& m.sC-.of -;t~"&a:isr t- am feBt1. &QV@ m. lmL ,- l p e . .%ki;& :mwpf ;m; f a'ad&-.'g&@( 9e: mu ' .posed dong the milag of arlmre5Sne. . . . . . . . . . . .. , "., . . . . .- ...... '; : . . -. ,, ,, - . , , . , . : , , '. ;. 3, , .-, - . . : :. : -.-. , -4.
&olibm - . > .
Tne Bladkcb Idands are bg deformad sediments, intruded by an atrribas5.c body of rou&Iy circulw wtcmp.
me ~ d r - t a &nsiat ~vu..of ~~ m4p3kc1astio rOa te r i~ . with. m e interbedded conglomerate, bl& sate, and Ifmstone. The rocka arts part of a belt of Siluri m a rocks that are prment throu&oub much of norther Prime of Hdes Island.
I . I . d , ?
he sedimtrnts in -ai dip from '45 &Ass t i rarticsl w e a r to in trend around the uktr6baeic intru~ivrs an8 t o conform generally witb the
w t l h e of the fntnraim. The a e d i m t ~ 5d a zone af wrying width around the btruaim~abeenr=xyska. l l izedto'adensa, fine-g~ainedhomfels. . . * , . , , . ' ' -
* , " ." 1 1"
, . ratwpe. r ~ c l ~ i '
, I , ' - . . . - w '-thaa~l.- portion of tbe ~laehke i m d s i s d r i a i n w a m u g ~ c i r a a r b0dy of ultr&wic rocks about 15 miles in dimeter I see fig, 21 . Mdiagton etaws:
. . t , ' d . : > - "' I
wA w w r y ~ ~ E t t i o n heem to i.nd5c- that the esaentid. features @ma a'core of' &xiits about a aile .in drlarpeter Mth. an encircling . -. r ing oT p x e a f t e and m. a t e r border of
nhornblen&@bm-diarite. The tkroring~af' . . m o m n 5 t e and- bornblend#, gabbru-diarite arra -.
8 toether rwgbly &at th#~-e l&th~ of a mile - . . . wM~, that& accoqmiaa by-:outlying 'mama .of - . . b . .
diarite In the macat ~edimenta. . . , ..- r i . . ' , . !*
Ihe Eore the ' ~ t r ~ ~ i ~ + ~ ~ t & ~ ' l r e ~ ~ ~ ~ g l w t e mass wt LOOU . feet by 8,000 fwt in -outcnrrl, dimenaimn, & ~ i r c l i ag. t h @ , b i t e * mrs is a TOO- foof t o 2,800-foot ring of mxeni ' ta & w ~ f i t s , %@ wehr;tite -& to4be . conoentraktad, ia irregraXar patchaq *thin 9th gymmn5te ringlnem the an*t Be- *- W p p V m t e and the dunite, . . ' .
. . he castacts between the diffment ultrahesic rock tg.pes gmiraljr .ge .in- '
't-ve Mntact'i, aXtb.ow& m& bf the h n t ac t is b e h m wshzlU."t e -md p y r o d ta '
. . . . I . I A .
* ' I
zn , w ~ - h ~ ~ ~ & *,& .rt3iIr-fa:w are ~1~3?rosrf&v *&ljhd; %I& .md&+@ :&pe I- be *3wgB: : t i i a 1%t$lld:~1.&- d m %y &atriex eqflinda'rB rdf ~ Y m ' f : . * w ~ 5 t ~ : &d,.&a*?m!lc mi t'.. @%stianable data from a f ~ n v +=eQwter. ebsem&ipna ,-suggest thath the WBC~S mdLpeteepl;pinmr&!" _ . . .. " ,: . . ., p a - - , .. ; r..:. - - ; . .
" - 1 .' . .
of . . wma%$.d.we less than a millimeter t a se&&2 : ~EmtlMms:. Zhe d b a r b e ~ % U ' i ~ : &gpa4&:+' is im&.a s e w tk~nq,qf ,p=titic. $qx%ure, etn&.in.nwrre a r ; $ ~ t a s . ~ 1 3 . ~ j & ~ fine& m n 0 ~ ~ ~ ~ ~ ~ P ~ ~ 5 t & mag y a w ;: m E o ~ + ~ ~ : ~ ~ . ~ : . ~ ~ ~ ~ , . - wo+ td, % prbeat. .L& ql~bcelly :-&men% d i a *>Lbs .-ti bid %"-fi.on.s in**!.-;+ &itid" wipaS.>.* & $ i i g i & k T &d-&@: &*:rn &g '56 &,$& &f -tB& *-*-
.. / - tit* a k ~ s i . - - j L ? :-:.";.: - - . . . 1 - : - L , . - A * , 4 -,, m 0 L d -,:A, ,.+ 3 A ,. ,;* . . A ., / M+:t > , : .1 .. . . .,, '-' ' . I . . . . . A ' + .
' . , , . i / yt . > @ ..'> "5- . , . - , * :.:i - ; - L A ' 2 , + ", , . . ;? , ;**it , ' . J;* L> - . - '. + . * . ' "' . Y C - .,._ ? ! i ; ; !,$&bra; '% &ab* df '& a$e r - i s & %t$r=iay iaw=. hgr-f, and their a t e r a i o n p~~&"t'~>li. %&p-Z&Y +*: i):$f'we~y. C ~ C ~ C ~ . tsl)i*ly w- -.
tOd.SB:~r"8m0r~h0t'<;~rangJag in campositipls f r o m , & - 8 0 to An 93: The prJrroJEsne* '
imw3W. ';J;$ ..ma%a%'t3s'-ma!Mw&q &h: &w&. -an&wikm-a&w W e b - t~&dicrp- side-of-the pyro~ehite~&J&A~:t~~f '&e @br& Eooh~&&ri%~mt$'tIiB @,Ma.-:'
axla is 'probd~ly a l&e differenti&@ bf'the g&tk+;. i"Ithe::fildqp&%f %hit# &B&" ; ranges from mdesine to labradurite, , .
. , - _ A . - . - m b' I '
-,. : :,> , L 1 " I I . - ,.. '1 : F ..'.'. , . I . . I ' . . . j . . d ; * ~ + ' * : ; : . 5 2 '+->:;*>:7i:?ii ;:,;,. I n . * *& ..?7>-
C, . . . . % r~lhtame ; ~ . t h . ~ n ~ s ~ ~ . ~ ~ - i ~ y U . ~ ~ (ktg* *$.- ~mw.wam,;w4?77
eech ? P w ate&? f a% :> ~ m t ' - E a r tq&*&ea t-. ol,? th8- e d xJing+ '%e.duxfi te ' .cme.~,~~t&~ - t h & ' ~ & t m + d & oIi*6 ~&i&.' -
We-9 f ~ ~ e ! % .& .M&w t qnger~twe a .thm .that. OF, .the mr8-.,izmfiich al iv ina - of t l i~ nehrlite, %e calcim-mqp~sium of ;the *mite p r ? w l $ ' :.: f o m d at M&er tmpwatures. k b h did. the mre3am$a&3s. ~-~1%~;f2bn;;r%ch "" a+;;'* *
, . * . -.I.' ' - ,. XI.-.
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-. ' - .,4y"' * .
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mxm!i:of ~ * r t ~ i L e . :*;&kE&@ i,<bh&G>f*l- , & , ~ ; c f f l t$,-b)ls:,atgre , J.::.:;:
w s e 4 r ~ s ~ k n s :T.i&iq h m k ttp; :inru;t:df8ti~~t,~~:db- . . #.-.-
ordhlats WmbqE)$ai-:-,-lis>:&&er ~ , ~ ~ ~ ~ 1 1 p 1 " ; ~ ~ ~ . ~ ~ t ; ~ f - , ~ ~ ~ @ ~ ~ : r ~ : ~ : . ; n: , : . ;+ , ;,r',..:.f:i,:,;. . .
:ug~-:-ca : ~ ~ ~ ~ ~ ~ ~ : j ~ ~ : i ~ t m :~mm &;;eentee,'of @tsbmd,; fW *pq$Or.'daa :of;.&!ga@$i~~$temdl!U34% m*. :an&.,&@ - ...'-
~ I . h B $ ~ - d ~ ! ' $ & Q $ ~ :'%m;;:-&x.k~~&'&@ma , : $ ~ ~ w ~ . , , *Ewe .::-: ? . :? ' - ' . i - " ; - , , ,- , , -
, , -;.* t ;;- ,; *.;!,i J .>:- ,-, ; ! , :., +,,,,? ,.: ,,., ,: <,,:>. ,-= ,,?,, ! < , ,,,;;:: ,;L;bb ,.;; * , ,, - - < ,' . , , : *. I ... ,... . " , . . " , . . J . J < ,.,.
i. ,74 ,,.*,.* 2 <-> ? - , - t' ; . ...
~in&st l depdsits ., - 4 *B :"' ' '- , A - t ,.. . .,# ,, ,, ,: , . I . . : . , n -
, , . .
,BO - Q B ~ P ~ P ~ twwb!vas i ~ ~ . p ; e a : ~ : ~ t ~ , ~ a t ~ . . : ~ & ~ a m L v ~ ~ i ~ ~ ; s y m e d ,apM2 poup mi.tmra3.s. . .> k ..I .,. - ' . , .,<, A ( , .. ,.... .. -,. *L: ,. .+-. -;": -:I :::! : + , , . ,,, : - :: -,* .+,,; ,:I, - . -
Wf%W .Mw&r, , ~ i e $t$e1 :-* -9- ;$88ep41~4?& im a~- *&. tw pw@LaL: phmei-of,~~$*. -*b, bad, m;glmEl :mm --.,,,- ,:x.b~< ~ m % ;P$ ,~mf 2- w&~.t~ 3% betwi& 3ipeff-t 2 percent of, .&fifie of %he m&f f de-beerrbg mrw @bra PWUWQ .W: @l@nm~ o$ ,.the: .Qm&d: ,hWr&oq,i QeesU&~&;; -[<- .S:
. . m m r t s ; ' , , . '.- -. ;:>,. ' - , , , ' - ; , - # - - I- .* 1 , , : : 7 , " ; : ? ( ;. ,*;;;, j b , . - . 7 , + * * , ,. . L . - . . , . , , , , - , , . . ., , ;,;: ;. y., ,;, ', " : ;;i*-
. , , . , [ j ~ ~ ; < ~ , . &;., y :;j ,- : ; ,y ,,., 7.j- < ,?!,;,: ;,'?,;: -! .yf >:>r!, >? -' ., :,-->"",: , , r ! , $ . . - - ' ,,<. ., , l!,? + $ ~ > ; ~ , > ~ h f ; *!>, ,. ~
*.Y ..I, - . .d .. .. ,. , " . , , . C
, , < . +-, , " ;, 1.- ,<k;;,, >; , -,< ;;;.L..*. 7-: ; ; . , , ; - , , : , , . , , - v. .l: > ' . , . w , *. -
I ,. . _ , - ' . . . * - -. , , . , , ,, . , - 2 ,i. T%, ,?; :-,:- ,T?:.$*~,~;*.c.-.,.~, : A , , ' ; *7!:,,? * ,
L - ,*'l . ,, ,,,, ,., ,,, , ,,. ,,, _t -I.? f;(.:]-:f'*t~:~'~;,,~ +%:: ::;;::.s;, ,yam;::; y, I::,:,: :,. , /., :.:.,. -. ::.!...-:I
z ::U-,.m 3 , ; :; <T:i;k-i ' 2 . m . . L , , , . A . r ~ . 1 ,m."a,4<* x, hy,,: , . f: . . . . .. . ;A. ,:; ,:--.pc,.,. . -. . p , . . ITr*:. A- . w- +. t.. PC. (;' &t&w 43 A K ~ &5 - I' 2; ;. j ?:.,!,: y [:pi: b m * .&$38#:- thQQ 0 ,%3 ', ,; :. : 43- A Ee 3% 5 6.016 -.a. 05 o ,Qoo3
, , .,., >4--",* *I"- , < .. - -.< ;;4"" i A - 4 ' > 1 . , *.*E 8 .
; .- , *<.: f L . , . KT :~,:2.:>> 5
i .* 5 *p; V U X ~ ~ M ~ R ia, t ~ r q 1 . ~ mqj .ei&3ii*t 4 ~ t - s - 'd' . W t 9 of the 1Jra - ~~ -re-: Wved*,. Hornex ,rrt4~:po~~i79 i&2,QL of.,plmari WGI~W&~Q~B~~O~# , %
platinurn>in the ~laahke 'IsLmds i~ beliwed Elli&t, 'becmtm of recent '&atd@im . and bacrolse suit&le glacea of aucwnulatS6a of pXacer matefida q a Tacking,
. . " . - a <>:\? :,, : .: ;~~~.far:&~~&~%e,qli~:ot
m c k g @ , ~ v i ~ 5 ~ A ~ o S i E b e i F ~ , . wera.W'%dkY -~~d,by:hdM* .JT , ! - ' , - . - b ,/ + ;* 'I;':: + . -
* < .^P. , , L " * i." . . * ' '*." ;,<
an & &out 1% d e s 11 &meter EWI &- .to &d&ll&'&W #n. - thed~c@i%y af Cwe
fa, for the mgt pmt., :m#rM?with rmtlakeg. bmab W t%&~, A m d ! ~ t v are @pkw except >dong the :bbach+md on.Eme-Pe&$
. ' : l h e r f l h . b b ~ i ~ Wh~i s.4 i a r ~ $ @ t jWr 'bb1*-.d&$i % ~ $ w e o ~ . i ~sgl(adse. ~biptW-pm,t~~.g~,~sw.il ,md~ a -0 af::rhonzoBor$te~ i n m * ~ ; ~ m e * .
*- * ae S w Wpa;lo?x : m o d tilt8111 a& ,~~ti~t&m; -&a+ of %W al?rtv.. . b w g --dl -~~t,.am&~.%wrneg.~, m~th~v.ster~.mak-d%pe .a;bou2- 60$ ,m. _I .;-r I
m r . the contact of the d t r a a s t c . ~ w i ~ h ~ h q , ~ w ~ , ; q i ~ q m t ~ C - t 2 j e dip an& strike of tha foliation a d badding of the w m t s is qproematelg.' pmallaZ to the contact of the btdmWk,,gipl m, far the mat part, inward toward the ultrabasic fntrusitre. Nee$ &e'moam&orita intruaive- t h e ' g r w
* 1 b . . b ~ p a ~ m $ e d ~ h - ' t ) $ g ~ ~ t ~ f ~ i - a @ f i i & ~ ~ - . ~ - . . ~ ~ , ~ : . - . 1 I - , .? . - e & . . - - .hc - t. .- >. .x L -a--. p . , . . . ,. , . - . , . <<,!i v m , * < . . - , L ,* ,-, 7.- -, ;,,; .' ." * ;., , ,!.P<" ,7<'q<.... . . .'-l ' - - .+ ,- ,J , ,: ,- :- &- , ,; -.:- y: , ;$ :- .;. - ,;;,:; y.,.! Y p , <*i> - ---. .: ,-,-,; :>?.:,.< 0 ; :,,; " %:?
..:+;:%Qjs ~ ~ a b ~ 5 ~ , l i j & , ~ . ; * : g ~ ~ ~ $ & O ~ ~ b ; , @ m : : & ~ , ~ t e . $ &i@ft+;,. mnnl% :ho@pM$ral-gn4 Ldg+qi&.;$&mb .QP .-these 0 . ~ 6 . .., .,- :,:
&wt. h a u s e of the ∨t,:J$ims...grai&e$i;e i$ir ,i;e~r in, th6 - &m36 :.F++I&ek e k
&a becaw .of i-te exposures, me 6-t mxt~ttom bet- the@& vmious"
mmb. TheG m a s bcw- am ext&v fresh, i a on..me Peak, at ' . PlWee -w hiW tte~m$iniw@~QIhat $tQe oktglnd &-tor of the mdc - - has pbm completely de8t-L -.kcally part~ of. these. socks Bare Wein bltemd--b
. . c o ~ , p . ~ i t e {nrt.~a+. .. 0 * . . - . - . - ..-*--"% * , ,A 8 , r-,- 1 <. ..#~-,,: v :+ vs-. -*< +! -* , , ,,,; r < 0 ; ;: ; - . . \ ' . . .
+;.;, , , . ' ",' - ', ~ 4 . ~ hq.:J ..<,:r;.- . - * ' , . r ; - 4 : : \ * A "! - , - , . , . ? 8 , , , . %e hetrabsaio rucka"t'ha,t, c k p out m b e 15e& pmper are iar'e;ew - k t e ,
~ i ~ r + . ~ T $ t e t ' . .Ihe,-w &qil.Ber 05- ~ , P Q & + i s : ~ & t e :cgn$dna:ng LO p ~ q m t , tin, 30 perogmS pf oLi.vige,,-nCsats;tr~ 'be*@ ctW-pxen$te mass
ad. q m @ n q , , & n % t a &*L%tepare ~ & t a t i o z & . :with d, i:@ in m a m i t e and some extremely coarae.diapddt, &ystalk.,&n,$& ;:dunitel -* t3raJ. -like msma of W i t e cut; the m i t e , a d what *oar to be d i e - r @ & _ d - P y r : m B . p : ~ a t q , r n t . & n .@ ?-*, .: !,- -..+., . .: * - . . -
,, - . v . . ., 5 . ?
" '... -- - % & d ~ r < & e n ~ . w ~ o ~ . ~ 8 p t ~ r . ~ 9 4 3 ; - ~ n - ~ t3stkqed~olrmbmttion parts of, @ . . +tzabakjd rocks of Mt. b e t t . 4. a d 3 * eoinity,;Clwelsard - o m - + . t . . . , . - 8 .. :
- kt. ' b e t t'lies on the mrtlwest .>iide 05 :CLB~& <*, &out 35 ni l ea mrthwest of H e t c h h (see fLg.'l); ' 9h.e ~~kab'mic'area is accessibls from ..-
. .&$+tm:vw : i ~ & $ ~ ~ & : i & a + * ~ w ~ : %$ a-5~1:: Fw;w a&x$a&. i~gj? l~ut " 7: a $ l & w x m & :&:.,at& $022 mil#M~;;:;:w m; J+)&zc &&~~-*~7ig i t**hw partm:ria#*5ug& - ~ g ~ ~ * ~ ~ . ~ g ~ ~ * t~f&&t:&r$ag m o m ; * a : J$moa@* !&t-
#& e:&a$g& , w 3 & j ; & 2 ~ v & ~ & ~ ~ ~ ~ e , &am m:;&&, : ,kso$l&;:ae+&@ .a , , - . , , + ,, :& .:;: ;. ,: , ,,, ':+j$t&.?&@fiwy ', o i i ; ~ ~ @ ' ~ ~ t ~ & , Q $ & , : r ~ w 1'- .j~;,i, ,,--' : *d2 .A .- ? '-',-I - ': 'I*'
. r . 7 ~ 2 ~ . . C ~ : - . , . i , ~ . . . , u . ..l:,,,:*i:.. , , , * < .
,. . ,,, . ; ", ,,, ,, <: >. ; . ->A: .A,,b a ~i~,.;: :;: ; , ; Y . ; ~ : . ?-, ijL;:pv , L : m - ' : , L $~;j-zq> ?d:~ 5.:i~'i :;P :':At? 'T, 5 ;- ,:,. ,.,?%.? ,.&'< -m $ ,,!?!:::, - ;.rt;;:<::; ?>?+:;? :><:,> -;:,pL? " ~ ~ ~ & g $ : y . ; , ,:;;.: ' r . . ,- .. .+,'.r +,*>;r&?~!,, 5"$$ <?2 ,.,:!$:;i;!':-:;!:'
u ?, ... ' Y 8 " ' a = . ' ><*; <;,. 3 , ;-? :.:::? :; : :*Y: ;> ,; :;;>q;.L:; ;;:;-z yAi$ ,>:-y.:, :; ,; *>l:~p?:* 5 t,,:x,2.;,&4,1;; ,: ;: 5s ;, ,!;: :.*;:>:
u*bbiic r wb h v e i a t & l ~ a ~ f ~ ~ . ~ l i . & f &t 33@1 t ~ i ~ ~ ; S 2". -.'
Rep%&- bel t of metamezphic rocks 61, 'Ihe metanmphic rocks are. fqr the m&ek ,,m , t & ~ ~ ~ ~ ~ & m ~ & & : j j h & g ~ ; f & + . : C ~ ~ ~ ~ $ o f i 5 f i & j j $ $ & $$P#$&&$~E%'.' c@j b $ ~ t it ,+ p-ta .: *limd ne': i&fee$6,: s$riw r p & ~ ~ ~ ~ ~ b : ~feOef&g&+~i;p&&@; . ., . ,, WOW- . t 5 n@Tn4a&$ef;dfgd - ifi .4dw&$$&g '.wrefiyewwa <$ti ',:.:: :?:; ; :, : l;i:: ._ r n q ': ;-:;; . ; .:; ,. 3
<' !.:>-il- , ';"".";' '. .3 . -,-;. ., *, . - J .,,-.,- *y = - ; *+.:: L-L ,;,:%,,,. ::, & . 2 - * * - + b " y
--%:? -: .- :. . .. . . ;.=; .. +2 ...., r,,Llrr:.i. prr~~;~? 1:;. as:.n?:;. , - * ' I,:.T::: Tertiary corglommis * , l#confmabl~ warlyirg: pyrm&r~;$mlim% ,,,+WE
out far e&#lmbe: severa3, thou& I ttgjj f,eet af ' &LO& wmaAq6aaw the b e h -'i3f- a P1m-e bf on &.. 80uth M-&8b g f - UXafm' fy,k Point. cck its
&&is& q ,;y&-t>.71a d&,&tir ,:,? c& ifit;$* &+.&dditO &rn6 & * ~ ru : , A+, - m,bdhh- '&gl w k . t E H wy;wi Md w&+isl j;~,SgkiIai'~,fl~w ,&= 1 . I r.1-
b.dpa&,la '+h*',w+$ti ; ~ 6 . ~ f ~ B * - , & ~ B ~ mdw: iato7.d -. s&H;;u- stone conwi.*'nthn&&&$ :$*bm& : e ; , B . Q m B : %@;OW&$$,+ *er'&.+"geet . i h .. A
mese ~oc lcs @ve been camelated by Suddingtp Y with w e Port Olmden Eocene roch -: , ' > > , ,., ', ' ,..-,:.; ,; J :.,, ;:,:,,,: , , . , : . , . . I ,. ,,I, , ' , , ,"-+, , ..:;.,:-::: : ,; ,,:.t:: :::!:: :!.I :,I.;:. : ,: :,, - . .., ,>.. . - , A ,-
, ,. . , . + I . , ,?':: > : '. ,,, ,'" , .
I . . ..,,. .- ,, .< , < - 7)~: :*: : >; ; - : ..:=?,'#( ,,,,, $, ; :L .<,<;.<,->;,:,t~,A . ,, 5 ,:<{. ,+,:, ;>;: ..-. . _ a ' , . . * , - , , r , - , - ,*, " r>, A<."%,+. . ,;-, , .
. , , l_h.,:vi :-l,,;l ,> r , , - ~ + 1 , - L + . p ! , , , - , . ~ r , - v v p . ~ - ~ , A ;-:-,- . , + - . ? W , ,<:' 4-.,,4 : & p 5 ~~&$~$v#+~&&~~~<-~~*~;!~~, ,.;::;,?-I-[ 4::; -, ,:"",*b*% ,-:,
. . +l, < " >., ,. <. ., . . P , Y F , .
, - . - m . , . , . . , - - !. &,,:.,!-! r;,.**" :,,.;.,,y ,..-..,:" . l i . , ., ..l_., . ^ L'w. ., .. . ,,; ,>#! ?<I :.; ;?,:;.-,?, ?b.,j-,;!":,, ,:,;.;:,. -+;;f-"*;><>:,f>>~~:: ; - , ? - : 4 L , v , - * A * - , rn.4 + . ,, , .. . .. .,; ',,.42 ,' *-:;:,&rl ..,7F,' :
udsic rmks f~ a m&e conposite *em a & ~ i d ~ m ~ ~ X ~ b F ~ ~ i ~ I ~ ~ i
*it@, @brc,, b b l e a d i t a, p ~ w i t c , , mhrIit e a,ad duni te. , , .,.:,,' ,:': ,., :, ., ,-,*' - ' , , L , Y ~ ' - . >.' :-: I.:-:.',,, (jL':.'.,,> ::.,* :,. , . ' . r . , , : > ;:: .,, <+ : . ~ ~ ~ ~ j ; ~ n : L, A ~ , ; \ i j ~ : 4 ~ ; j ~ ; :$?
- ,,;.ai&&*itd '-Q'- ,- ,ha:; ':%*-.' * , %%@: I
b - m 2 e b ? a t d i : & 'tb,he:hnthi, ,wtw ijit,tg, d9ii~?ij. at . -. ,... the & ~ * ~ ~ s : , : & ~ g x $*;ab *@F: '.gO*r:i*bek.L&% c&g;,:fiO"&t~~~it9:C';.";^;
- & . , ; , . ; ; , & , , - \ , - , , - . , . ., - - > , :. ; <4, ' L* .. d . , .. , . , > . ", , ,LLb,., , ' '> , . , ,A ; ' y ' , ' , . ; . .'j',r , . I ...; "?-)! ",::;:\>:; 3,,,.,,>$~$, :: ,;,.-, km; :;-;:.&"b?,:t.<!.; :s;:{7i ?<!" 7 .: :--;$,, -;fi ~ 7 ; , , J ~ . ~ < j : , : - . + +., ; .>>- j*,,L" -,h:,, > -*, 7, :* ., !($%,
v ' '~~~~a&i&.~miz~r : ; ' , 7 *8 -~c&~l~ .~e gf ' A W- bw&;Lrg was noted wi$hb;-'thrr the body is made up k g 6 W of dunits, Wlite and pyrox&ite, ~n general the metern portion of $b body app&&t::t$bi':f&@& dmite, vbere the vestern p t is P p o x d b e qs t inc t ions are qot because the dUnite con- t&iw :e.'.irpe, mbc&s :d :pyr&sfkta ,,snd'';bieMXf % mI:~$-~t~g?P@~~i $16 con- w- ~ ~ ~ S " ~ &&$,i&ed-& : o f a ~ ~ ~ 2 . 4 . %&, dentid j ~ s $ - , & p ~ d q 4 t ~ , w .&%&i:$e & s@ten .fi.&$ thl s~~~-:msc,fd$; ,:er<b~.Bw* $8 ,: of ,m *wt . * ,hdmn-. I . enatte gabbrq, T& mrg&&2 :%hbf&n&+,k .AM -gabbr 6 ! a -$& i&&b .' . a q o d the , bar41 . ,h, the ~ic in i ty . ,;of ,.+ther aanery. on, Union B y , &me the hor&le& zone i$: priobbw' >,tb-& fee$ "t.t;cli;. .. ;. . 8 ,-.
, . * . . . .I . . . 6 - 'mtwo : . , - , J , , .&jg*,,.pi;;; . , i-. ,,... , , ,.<" , .,;,A$, , ! 0 - - - " . . . , , n';."~;: 3eg; ; ' op;'> - <. . -. " , ~ 6 . 1 - . , . ' . . ' , ?f .
--..mi@ o n,,:.+; q , :&*,: p, :&j(, , . m e ' -! , , .. : . .... - - ,. . . - . . . t8.,.,,,,. , . . . . ,
, - . - ... ,, , . . . , * . , , , *:.I . d , , . - ' - , . -:: ., q!-. . :', ,,' - ,;, . .
' L . . r , ' . > - , ' . , r
.:t: -oisbagr p&w&omQ9 *- ~ & t i m @ + ~ W ~ - . J ~ B & ! P V & & ! ~ ~ ~ M . - ~ B ct-w&&) . b e & o ~ , b k a b l ; i s m E b - i .&&ah. P & & q s j f , & i ' & ~
i=+smzwkt.,*%hj hr&le&t a:.n&:i&~ : dwt &dm urnhi:* i$.;hwti dtb tb: - .: <?1 ~ i ~ y ~ @ $ a t ~ , - - p f : ~ ! + ~ ~ ~ ~ e ~ ; ~ ~ i @ $ ~ t - , - ~ 7 : i , !p*y!y. "*.. --...::-
{r" - ; . * , \i5,;; :.. :.l->.. . r - ~ $ ! - ~ - 4 * ~ ~ ~ j I1 :$ ' ? .: -I-: I:;s-jl:
: +i: .* -. &nl&: "~hft an&$& ,a& -$&kg lb -e m s s P ~ b & : ~ M ~ d r t ,& kawk?3m.,gdt;tion ~:.&h=ba,w EWW.~~ r ~ t b k t& I;W+~ :,ha MW @3,mhty k 3 ; w b ~ r f
, ?.o-%ivW .H%h l g : *z% I bdm mf~otf:olX ef :k~66'?4 wh&ckE: in&+t.8$ $%I$& .-%he;. oltxlne A.FEmf95~ba nrr;r;;Bbotrkj92! pemBmt," 09 rtpmt*$ri': ,tiqlg$&%):.artd 8. psmm Qf?TEqskit#
: t i ! : d e i s" e w n 8 l y r~$sbb%&.' @@ckr:yfi t b rl completely altered to ~mehtikyri rher&~: a&m:.is ~Wy-PBasb? i : ; '.I-:+;
'. r 1 -
.*.: * a & t 4 $ t j f i . . * ~~~i *e"&& b$b+ (t'.abd&$*%&d; :<p#$%.&lel &+in*.&& a i . & c o ~ ~ ~ ' ~ - ~ ~ : * ~ vi$tW&b&.ite,,*a@: a- =of-'d*b.
, . , r '- &bL&am~wh - $ * e ~ . . ~ k & : % ~ ' o & ~ e z & - U t 6 , , . the tzyroPWeiNts. .. . , , . ., ,.. b . . . . I . C
. ,.P ' '
Wrmreaite,l Two wtrletias &ty&xenft&r&e present: 4 W e t y of'pyrox&fte wbfCb lies Ktem the O l r t ~ llmft8 of the U%tP#&8i~ bay, Between tb d m i t p ' ~ ~ ~ d the a i i ~ g s , ~ . hwfib1ad"it &, W ~ B ~ J 'of '4i&U&',-: $&'*baai'@ k mmlf a ~ & j t b q rPh.&q.& @ ~ 5 5 & 1 ~ ;.', z &Q dmwg J B ~ . el: a m - . m ~ &, I$-&&'$.$~Z+ of
. Ir W? th&f 8re. pF&f@&u a~dW&trit#+ba r dbb%~eWb%e ,gmbhM( 'df bkLust3Yb- M $*n, Thk ollA@b p&$etit: in mYnW q@nyi%im"l "i?l t h e &Po$ei$Zt $ 5 8 ~ dm&i&rabl$ ricEef ',in *tm' @I&-%& t o;f: the, Wn%@P YO^% .': :' $%X- ~ w . 9ndeK ' u ~ ~ ~ F B W W % ~ ' ' ~ . i&i I.-@ %hi& <:4&i*t%-t& d Tk'2~'ih (-&@IT cdn%&t af! k%ou% 2b be^ mt'; "The p ~ b x e ~ 2 ' e 45. , * the ' border zone is typicauy extr;&ly m i a b l e in grain aize; lacall J velnsd.end ','. ip+ segrep t%ons of pyroxene, of pPpa t i t ; i c t e w e wftb csy~ta-ls peveral , ' L n h b ~ is rength* arb s$y&[email protected] , .. f j 9 ' b m i ~ k , . '. Pi* $ r g 'giai. . .
4 : ., . , . J;r>"".':d ' f '+ , '. 1.: ' *:,, . s . * . 1 . 1 . r . ( : L ' - ' 7 c > :. . - . "+L :*"< .:; . .., * .
* .. (
; : :. ; , ; ~ ~ ~ ~ a ~ l g . g ~ ~ jw.+, prdh$3y: b&d&a. :.q gpe"w,- ' ;"&&ld .k"&: =&- ' . o.~&na;.&&&L . tbwir be&$he::b2'ik?ub$bt MB&-.o~- thbnk&bil.$e Cbmp&&+g i$ ~ ~ ~ s ~ i t ~ ~ ~ " t ~ t i ' - k & $tAlbe ~ o ~ : ~ g p T ~ e ~ & ~ ; ; pfldhni?e
. Sbqe v&Sn~lilb, &mt Xte :h&bsJ1'.l~ 3 - h br4m&s in MdthL. cb th$i: p$@&peni t e: ': '
mrginal pyraxenite'is' also cut by dikes o? ItG d g 'n'*l;nb%-e and hwri%~he gabbro. -
< , < *ye; " ' ~ - + : , c - : ; > . . . . . p C,AY J ': 2
A *d ydri p*$Q: ocw 9 ~ ~ - masses within the central d~~1ite,~+nd nun$wtiqs dike~r~f;thi~ ~ r ~ w i t e cub me &mite. Thlqcppoxenite i~ made up,&ost ~~&~as~ive~~,&~~~iopsid~.~w.~th ag index refraction of about 1.678, fndieati~g that contnins &Gut 92 plrtc6nt of d i ~ s i d e (C~&JS~~%). molecule and 8 pmcsnt . ~ f ofdpnbergite .., (CaFaSWd molecule.. . ,; ..., r.., . . I .> .p,-,,zr , . - . -
, A - > ' \ ! , . $ . * ' .--, { ..'. c " '.; > '. Welnlite: Irregtilar area13 of welrl i to , gradationa1';wIth duhike add whh.
pysoxenite, a r e present within We dmi te and pyroxeniie masses of the central. zone. The wehrlite is mde up of tilopside crysals, which are as much,m:2, $~*s acroas, in an olivine mt~ix, In general, however, the irrbeWate rock %me, wehrlite, fe much less c m o n than either pysaxenits or dwite. For the most gart the rock minerals sesm i;o have w e g a t d into rocks of ewentially mono-minemlfc cornposit ion.
4E&nbaa<wr., ~ . : ~ ~ t l e ?l-=k?*sai-daxk a m b ~ e d % & w t a* :?.taw & . S e c ~ l y w * ofi h6~n% t.: W B W & i . j n s d S W m ~ J m q withp iM*-l--l- w W , s ; . a p lrimk imBmJ h c h .b -;tist: ciXt4 *by mmmw! dikes of p w t 1 t i c harab1Mt 6- t -: P-'t$t I& b~&E&ndit 13 &yp%S;&I& 5%: -t: in dikes 1 t o 2 feet in width and 2U feet or more in b q t h . The d i k e are mde yp
. O f b e 2 ~ ~ M a wit&-&: gmouhht ~f - feZd.-@wd: htWb31!mB is- :jsl: &be.. f O P ~ af .sf wt&- ewer. as ZQ >%*An2 o F i d d f d ~ t h ; s ~ & & n g :.-
. I r of. the, aybwj. a.k e&t: -Lit9 &'do -win* W f h &kwh -. FbMspaq dmre p h m t , $BY -8.IJ;8. W C ~ a@& fa&*+& '& l l td*w' c ~ ~ ~ ~ ~ . $ . Ha albite. m8 c4l*,w& .*om. ~ ~ ~ . d b ~ : ~ &' amwun& l ~ & t W *m-;&nQ@l@: B f 2 . sulfide minemlw &re cwmiaMwith &&kqd%te,* * - - . :-a%i .. '. .. : v ; kc+! ;
' G&'bm:,, @ m - 1 1 ~ ; W 4 - : 4 & i m t ~ ~ v n bb,4--W e f U b @:-fi+'.-'- '
-~.sada,ri&@bm~, .Tit% mbr~ 5 ~ ~ P B C t ~ ~ ~ ; F ; a W r c ~ i w p ~ ~ ~ n ~ ~ . O r % : ~ . 'L:
minerals and in te la tm -4% -is' In" f wh; gmat ipmf =dth , surr~wdi~ S-B~S.
. . -. *-+,,-.. 4::s -, : ,':%.:'?.., . . *,; ..,4,: .,:::*
. .. . , , - + , - . " =$Y:%r.?,, .!, c ; * ~ : : ~ ~ ~ < ~ , ; j - y i , ~ + " . y ; v . - c.,,? ffl~:,.;>y,;F~;+ L . + * w . -, . .A,. .+,."
,:,,,;,,. , ' A t : : < : - ' . ,:.;i:. ;a . z ,7 , :qq l r T , " , , , . ,. ,.,,," , ,:>t- * , , . . ,d
, * r a,.. L. , , a~ . , , . , , , : i , , - 3 , + , Y * : : . ..I-* A * ,, ... "'I"? ! . . -:::. m . ~ , ,.m&: p;ode ,: ~ - - ~ . a ~ q n i $ ~ : . wF p:~+wed ~5 &.gbaw: th ,.,bitei
mt: 96 ,wi p a :W o&F:.~+. w h W;: @ &:,fey ;!ip& : ~ g q g , --& -#myr=@- - .Wffic.i,q$;lg, ,~wqentmt;ed j$p:.mn&L$ute--~!. @g~&&&*:irpoq&~ ,&:&< Cot;a3 xwSr; ,: . .A* Pint: a, (eae,, f ig 4) akpp% +5.rOW. s qtw9; feet-: qf wtepop are* ,gstiqla&e& t R cog- '
-,...: , . .tau:-@; .. 5:gWc@:~9f:1irrit~Lgba&tek$~~atB~w+. ,,J4qh , ~ f - % the. +&&$$B.& +:; , . PmsWt. %, f m t ~ ~ ,$bt-, Fut the+. dunlte, : !Jhie.- ~hrmiw: -11 derfderfiaii*Z;V ;&t.=,
the dunf tea.. : ,\ , j- , :.,,c l' . . : .., ; ... .- . , . " .
,.:
.. , . . , . - , .- .
, -* * ' . - . ,, , . " J '* ' ., , .- .. . . , - . . . .- 8 <,.,. - - :-,I.-, . .. .. . .\.' . '*, "'U. . .. 73 dl + + + 6 w ,.I"- 5 -
nt &tnt' B i& fk, 41 a. '*'*i; bddy of '&&$+ '.i@Git% uss: f~~ 't&t: $ eatfmated t o ~"~+ain '&out 2$ toris OF chrumite. The 'body ixi outcr~p dlmemtons L
. ab@+U feet 1% by f e e t . ' ~ ~ .3he-bo4y;..5~ massiue,,black, slQhtl ,y.q@tlc , ohrupdte,. suqounded by ,&u&t~- kvam&t slow m i z q fra~tyes..&~ ~ffpe'$-par:t;,~of tb bhay.a*fm W e . lmlyses,of' eppecipleng,of &rgmite #kq. . tbe .tqcaWti= Wk' bei,.mkde by ~ahnlE.. Wt6d; qf. the t8iemip1~~labora'tmy~.~.n$ A I < - - tGi + +l b o & ~ i w & ~ . SLU~W.. !be + b 3 ~ - k 6 gfvep . 3e1.m:. 4 . . . . - , , -', - " , - - , y l . , m : r ; . . I , 4 - > ,: A - : , - ; ,
FIGURE 1.- INDEX MAP SHOWING LOCATION OF BLASHKE ISLANDS, KANE PEAK
AND MT, I3URNETT DIFFERENT l ATED ULTRABASIC BODIES, SOUTHEAST ERN ALASKA
U.S. Departmbnt of the lhterior War Minerals lnvest@otion Gedogical Survey Preliminary Map
Scala tn feat I-0 0
Bedded Rocks
* .- - 1 . . . Graywacke (Cretacrous l
0ibtite;quortz gneiss
Intrusive Rocks
Ultmbwk rocks, largely dun- itr wehrlits,ond pyroxanlta
X Strike and dip of bed ding or
foliolion
FIGURE 3. - GENERALtZ ED GEOLOGIC MAP OF KANE PEAK AND VICINITY, KUPREANOF 1SLAN0,
SOUTHEASTERN ALASKA a761
